Litter will be left uncollected on the streets in Derby City centre for a whole weekend in November to show people how much is dropped.
The city council's street cleaning team hope the experiment will make shoppers more aware about the rubbish they throw on the floor.
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Victims are approached in the street and asked for money in exchange for a winning lottery ticket.
The British number one had a straight-sets defeat in the second round.
The council intends to prioritise spending on installing sprinklers, whether or not the Government contributes financially.